High speed underwater train from China to U.S.

One of four high speed international rail projects in the works, China is planning a 125 mile undersea tunnel that will connect Siberian Russia to Alaska. Passengers on the 220 mph trains will be able to travel between the countries in 2 days time! http://www.theguardian.com/world/2014/may/08/chinese-experts-discussions-high-speed-beijing-american-railway